Explanation

(a) Use of Custom Slide Show in Microsoft PowerPoint application:

• Custom slide show is used to show only selected slides during presentation.
• It is used to tailor presentation to different audience.
• It assists in navigation during presentation.

(b) Functions of Rehearse Timings in Microsoft PowerPoint application:

• Rehearse timing is used to record time spent on each slide during practice.
• It used to run presentation automatically.
• Effective time management during presentation/lt ensures presenter stays within the allocated time limit.
• Ensure consistency in presentation ot same materials at different times.
• Presenters' self-evaluation.
• Buiiding presenters' confidence.

(c) Types of illustrations that can be added to presentation from the Insert tab of Microsoft PowerPoint application

• Shapes
• Icons
• 3D models
• SmartArt
• Chart 

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